CeCl^sub 3^.7H^sub 2^O AS MILD AND EFFICIENT CATALYST FOR THE ONE-POT MULTICOMPONENT SYNTHESIS OF 8-ARYL-7,8-DIHYDRO[1,3]DIOXOLO[4,5-g]CHROMEN-6-ONES

摘要

A series of new 8-aryl-7,8-dihydro[1,3]dioxolo[4,5-g]chromen-6-ones were synthesized via a three-component reaction of 3,4-methylenedioxyphenol, aromatic aldehydes and Meldrum's acid in the presence of CeCl^sub 3^.7H^sub 2^O under solvent-free conditions. The method provided several advantages such as easy work-up, high yields and environmentally benign procedure. [PUBLICATION ABSTRACT]